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    <!-- 求数组[2,6,1,77,52,25,7]中的最大值。 -->

    <script>
        var arr = [2,6,1,77,52,25,7];
        var max = arr[0];
        for(var i=1;i<arr.length;i++){
            if(arr[i]>max){
                max = arr[i];
            }
        }
            console.log(max); // 77
    </script>

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